sorry miscalculated, but yours isnt right either.closer to 500rwhp=600crank with the 17% drivetrain loss. (17% off the crank #, so .17*600=102,)

 

Really who are they and what did they trap? There are only 3 cars on the top 25 overall drag list with 9 sec traps, and they all run 9's.

People that say our cars are NOT good for drag racing, cant fawking drag race, its the non drivers in them admitting they suck even after spending $30K+ they cant buy skill.

The truth is there are shops out there that have been in the game 2x or more as long as many of the forums perceived top 5 shops to go for a build. Many of those shops have dealt with motors much less forgiving than a VQ.

Any shop can build a 900whp car, the difference is who's car can stay in 1 piece. The mindset that shop A's car that makes more power than shop B's car with the same setup, means that shop A's car is tuned to the ragged edge isnt neccessarily true, but thats the first thing a weaksauce tuner will tell you to justify their skill or lack thereof.

 

Id have to say overinflated dyno numbers. It would explain why I am the only 630ish whp car to trap ~135mph

 

Why? You want to enter the Dyno Racing Championship contest?

 

You trap what you should given your power. Others just cant lay it down good enougn to even trap properly

 

LOL.

 

+100

 

Back to the OP, its not about the pressure, but the CFM of air being pushed though the system, a 72mm turbo at 10 psi will put down WAY more power than a 62 mm turbo at 13 psi, because it is forcing more air though the system (and thus more fuel to compensate)... thats why all these ricers with JDM integras and crx's can claim they are running 47000 lbs of boost. They are doing it through needle sized turbos, throw a GT25 turbo on there and lets see what happens

 

Op, I noticed you make references to our USA dynos and your fuel octane. Your 99 Ron is about equivalent to our 93 (r+m)/2. So your 99 doesn't mean you should make more power. Also you noted that your numbers are "uncorrected".. Correction brings my power level down. It's all based on a standard of environmental conditions so that power can be compared. I.e. My car in the mountains will make less power than where I live at sea level (simply put) but with the same correction used, it should hypothetically read the same power in both places. I don't think our "USA" dynos read low.. Compare oem z's here to Europe. We make 225-250 on average that i've seen. Is your power on your dynos rated in horsepower? Or kw or ps? Don't feel bad, ive never been able to break 500whp on 14psi so far.

Ross

 

+1 I used to trap 124 with 461whp on street tires. Only had my car on the track twice so that's all the data I've got

 

God I hope I trap 114+ with my car…new clutch since the last time I went out trapped a whole 102mph…

 

I trapped 114 MPH with 427whp

wow that is some high MPH there ashtrojan for that whp

 

Dynodynamics. Right before I went to the track. This one averages about 20 less than a dj. But thanks man, wish I could have had a nice trap to go along with it

 

Hmm…my brother has an identical setup to me (PowerLab GT35R, ProEFI EMS, same boost, within 10 whp of my numbers, 6MT, etc.), only difference is he has a 350Z whereas I have a G35 Coupe… he trapped 116 mph pretty consistently (20+ runs), his best time was 12.5 @ 116 mph.

 

I'm glad you're happy with your local tuner but that doesn't change the fact that there are so many variables from day to day and from dyno to dyno. Certainly a tuner can screw up and that can make a big difference. If PFS did a before/after dyno, that's a great measure of the difference from the tunes alone. But to just use peak whp #s off different dynos (as the OP is doing to compare his car to others) or as a means of comparing one tuner to another as you are doing seems a little off. Even without a before/after dyno, if you told me the timing wasn't optimal, the cams weren't dialed in, the afr was off, etc - that would be a little more objective. You've got both tunes on your Haltech, so I figure you would know what was changed.

Is your car back in shape? Come to ZdayZ this year. Screw this debate and let's just have some fun.

 

Im actually considering selling it finally. Im so back and forth on it, at the end of the day I just dont drive it or really have time to anymore, but thats another topic.

Yes I do agree though, the OP shouldnt worry about dynos, its easy to get caught up in that though when you browse forums a lot, you cant help but compare your car to others in any way shape or form you can, we have all done that at times.

 

overall numbers might change between dynos, but you'd think that the shape of the curves shouldnt (assume staying on same load type of dyno).

If one car starts making power at 3000 and the other at 4000 with the same setup, it would make you wonder on tuning differences.

 

Who says our car isn't a good drag car :P

http://www.youtube.com/watch?v=c0izKpQsk90

I agree with all the previous post, there are so many variable (compression, parts syncing with each other, tuners). However, I think one of the main issues are the dynos.

 

All you high trapping low ET people need to invest in slicks!

 

just sayin', you put 775+whp in any other platform that goes fast at the strip and it would be faster than the Z. Those heavy domestics do low 10s on 600hp.

Not saying there arent fast Z/Gs, but compared to platforms where proper tranny and suspension mods are super cheap to come by, we dont have a good platform. If they were better drag cars, we wouldnt have so many people making good numbers struggling to get into the 10s. Normally it doesnt take a great driver with 650+hp to get into the 10s, but in our case it does.